Requirement of Treg-intrinsic CTLA4/PKCη signaling pathway for suppressing tumor immunity

Requirement of Treg-intrinsic CTLA4/PKCη signaling pathway for suppressing tumor immunity.

The ability of Tregs to control the development of immune responses is essential for maintaining immune system homeostasis. However, Tregs also inhibit the development of efficient antitumor responses. Here, we explored the characteristics and mechanistic basis of the Treg-intrinsic CTLA4/PKCη signaling pathway that we recently found to be required for contact-dependent Treg-mediated suppressio...

Angiopoietin-like protein 8 (betatrophin) may inhibit hepatocellular carcinoma through suppressing of the Wnt signaling pathway

Objective(s): Hepatocellular carcinoma (HCC) is one of the leading fatal neoplasms and the most common primary liver malignancy worldwide. Peptide hormone ANGPTL8 (betatrophin) may act as an important regulator in HCC development through the Wnt/β-catenin pathway. We aimed to evaluate the effects of recombinant ANGPTL8 on Wnt/β-catenin signaling in human liver carcinom...

All-trans Retinoic Acid Regulates the Balance of Treg-Th17 Cells through ERK and P38 Signaling Pathway

Treg: tolerance vs immunity

Regulatory T cells (Treg) are requisite for the prevention of autoimmunity, transplant rejection, and tolerance to therapeutic protein delivery. Dendritic cells (DCs) are crucial for FoxP3+ Treg homeostasis, and their expansion can increase Treg numbers. By contrast, Treg are a hindrance to anti-cancer therapy as they suppress immune responses to tumors. Interestingly, some of the same drugs an...

Melanoma-intrinsic β-catenin signaling prevents T cell infiltration and anti-tumor immunity

A subset of melanoma patients has evidence for spontaneous anti-tumor immune responses and T cell infiltration into tumor sites, which has important prognostic value and is associated with clinical responses to immunotherapies. However, the molecular mechanisms explaining absence of a T cell response in the majority of patients are not defined. Analyses of human melanoma metastases by exome seq...